Door-lock.



A. W. MACKENZIE.

.DOOR LOCK.

APPLICATION FILED AUG-5, 1914.

1, 146,086. Patented July 13, 1915.

2 SHEETS-SHEET 2.

COLUMBIA PLANQURAPH CO.,WASHINGTDN, D. c.

AUGUSTUS W. MACKENZIE, OF CHEYENNE, WYOMING.

noon-Loon.

Specification of Letters Patent.

Patented July 13, 1915.

Application filed August 5, 1914. Serial No. 855,215.

To all whom it may concern:

Be it known that I, AUcUsTUs W. Mao- Knnzns, a citizen of the UnitedStates, residing at Cheyenne, in the county of Laramie and State ofWyoming, have invented new and useful Improvements in Door- Locks, ofwhich the following is a specification.

The primary purpose of the present intion is the provision of novellocking means for double doors which serve both to secure the doors tothe frame or casement and to each other, such locking means embodying asupplemental lock for preventing manipulation of the main or doorlocking means. The invention consists of complemental lock membersmounted upon the respective doors and adapted to interlock so as toprevent relative movement of the doors after the latter have beenproperly closed and fastened, each of such lock members being connectedby gearing with an independent locking means, whereby the door issecured to the frame or casement.

The invention further consists of unique connecting means between thetwo locking members of each door-whereby both of such locking membersare actuated simultaneously whereby the door is locked to its casementor frameand the two doors are made fast one to the other.

The invention consists of the novel features, details of constructionand combination of parts, which hereinafter will be more particularlyset forth, illustrated and claimed.

In the drawings hereto attached: Figure 1 is a front view of a pair ofdoors provided with locking means embodying the invention. Fig.2 is arear view of the doors and locking means. Fig. 3 is an enlarged sectionon the line mw of Fig. 1. Fig. 1 is an enlarged section on the line yyofFig. 1. Fig. 5 is an enlarged section on the line 2 e of Fig. 1. Fig. 6is a detail view showing more clearly the supplemental looking means.

Corresponding and like parts are referred to in the followingdescription, and indicated in all the views of the drawings by the samereference characters.

The numerals 1 and 2 designate double doors which may be mounted in anymanner and as shown, such doors are hinged to swing outward.Complemental locking members 3 and 1 are mounted upon the respectivedoors 1 and 2 and are adapted to interlock to prevent relative movementof such doors when properly closed and fastened. The lockingmember 41consists of a bar provided at opposite ends with projections 5 in whichare formed openings 6. The member 1 is adapted to move in the plane ofthe door 2 and the projections 5 are adapted to be extended beyond theedge of the door 2 so as to enter openings in the abutting edge of thedoor 1. The member 3 consists of a bar and is mounted upon the door 1and has pins 7 near its ends to pass through the openings 6 of theprojections 5 so as to secure the two members and thereby preventrelative movement of the doors when closed and fastened by means of thelocking members 3 and 4. A shaft 8 is mounted upon thedoor 2 and has athreaded portion 9 to make'screw thread connection with the lockingmember 4:. A shaft 10 is mounted upon thedoor 1 and has screw threadconnection with the looking member 3 as indicated at 11. Rotation of theshafts 8 and 10 effects movement of the respective locking members so asto secure in relation the doors as may be required.

-A spindle 12 is mounted upon the door 2 and hasa knob 13 at its outerend to be grasped when it is required to turn such spindle to operatethe locking members. A gear wheel 14 at the inner end of the spin.- dlel2 meshes with a gear element 15 at one end of the shaft 8. It is to beunderstood that the spindle'12 may be geared in any manner to the shaftStocause a consonance of movement of the spindle and shaft. The spindle12 is mounted in the door in any manner and suitable ball bearings areprovided to reduce the friction between the moving parts to the smallestamount possible. A. look bolt 16 is mounted upon the door 2 and isadapted to be projected into an opening in the door frame or casement17. A. shaft 18 mounted upon the door 2 has screw thread connection withthe lock bolt 16 and is geared to the spindle 12, and for this purpose agear element 19 secured to such shaft 18 is in mesh with the gearelement 14L of the spindle 12. It will be understood that rotation ofthe spindle 12 effects a simultaneous movement of the lock bolt 16andthe lock member 4, both being projected or retracted at the same time.

A look bolt 20 is mounted upon the door 1 and has screw threadconnection with a shaft 21 which is geared to the shaft 10. As shown, abevel pinion 22 fastened to the shaft 21 is in mesh with the bevel gearWheel 23 secured to the shaft 10. Rotation of the shaft 10 results in asimultaneous movement of the lock member 8 and lock bolt 20, both beingprojected or retracted according to the direction of the rotation of theshaft 10. It is noted that the shaft 10 acts in the same capacity as thespindle l2 and is provided at one end with a knob 24- which is graspedby the hand when turning the spindle shaft 10. Ball bearings areprovided to diminish the friction of the shaft 10 so that the same maybe turned easily. Each of the knobs 13 and 24: is provided with a hasp25 which is adapted to engage a pin 26. These parts 95 and 26 providefor the application of a seal 27, such as commonly employed forpreventing tampering with locks of various characters. i The shaft 10 isprovided with a pin 28 which is adapted to be engaged by means of a fork29 at the outer end of the lock bolt 30 of a key operated lock 31 of anyapproved type. The fork 29 embraces opposite sides of the shaft 10 andits forked members are bifurcated and engage the proj ecting ends of thepin 28 thereby preventing rotation of the shaft 10 when the lock bolt 3Ois projected, so that it is practically im possible to open the doorlocking members 3 and 4: after the same have been engaged when the doorsare closed.

From the foregoing description, taken in connection with theaccompanying drawings, the advantages of the construction and of themethod of operation will be readily apparent to those skilled in the artto which the invention appertains, and while I have described theprinciple of operation of the invention, together with the device whichInow consider to be the best embodiment thereof ll desire to have itunderstood that the device shown is merely illustrative, and that suchchanges may be made when desired as are within the scope of theinvention as claimed.

Having thus described the invention, what is claimed as new is 1. Thecombination with double doors having recesses in the meeting edges thereof, of a locking bar arranged in the recess of one of the doors formovement in the plane of the latter and having apertured projectionsadapted to be extended within the other of said recesses when the doorsare closed, a second bar arranged within the recess of the other doorfor tranverse move ment with respect thereto and having pins adapted toenterthe openings of the projections, and means for operating said bars.

2. The combination with double doors having recesses in the meetingedges thereof, of a rotatable shaft mounted in one of said doors andhaving a threaded portion extended within the recess thereof, a lockingelement movably mounted on said threaded portion, a second rotatableshaft extended transversely through the recess of the other door andhaving an intermediate threaded portion, a complemental locking elementmovably mounted thereon, and means for rotating said shafts for movingsaid elements at right angles to each other for interlocking engagement.

3. In combination, a rotatable shaft having a threaded portion, alocking element threadedly adjustable thereon upon rotation of saidshaft, a second shaft disposed at a right angle to said first shaft, 'alock bolt threadedly adjustable on said second shaft, a beveled gearconnection between said shafts, and means for rotating the latter andsimultaneously operating the lock element and the lock bolt.

4. In combination, a lock member, a shaft or spindle having connectionwith the lock member, a pin fitted to the shaft or spindle, a lock and afork connected with such lock and adapted to engage the projecting endsof the beforementioned pin to prevent movement of the shaft or spindle.

In testimony whereof I affix my signature in presence of two witnesses.

AUGUSTUS W. BIACIKENZIE.

Witnesses:

' BLANoI-in O. LUMMIs,

Jnss Yonnn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents,

Washington, D. 0.

